<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 2. 为ECharts准备一个具备大小（宽高）的Dom -->
      <div id="main" style="width: 750px;height:400px;"></div>
    </el-card>
  </div>
</template>
<script>
// 引入echart
import echarts from 'echarts'
import { reqReport } from "../../api/index";
export default {
  name: "hello",
  data() {
    return {
      options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }
    };
  },
  async mounted() {
    let myChart = echarts.init(document.getElementById("main"));
    // this.drawLine(); // 初始化
    const result = await reqReport()
    if (result.meta.status === 200) {
         // 合并两个数据
      let data = {...this.options, ...result.data}
      myChart.setOption(data)
         console.log(result.data)
      } else {
        this.$message.error(result.meta.msg);
      }

      

  },
};
</script>
<style lang="less" scoped>
.el-card {
  margin-top: 15px;
}
</style>

/**
步骤
1. 导入 echarts
import echarts from 'echarts'

2. 为ECharts准备一个具备大小（宽高）的Dom
<div id="main" style="width: 750px;height:400px;"></div>

3. 基于准备好的dom，初始化echarts实例

4. 准备数据和配置项

5. 展示数据


<!-- 卡片视图区域 -->
<el-card>
  <!-- 2. 为ECharts准备一个具备大小（宽高）的Dom -->
  <div id="main" style="width: 750px;height:400px;"></div>
</el-card>
</div>

// 1. 导入 echarts
import echarts from 'echarts'
import _ from 'lodash'

export default {
  data() {
    return {
      // 需要合并的数据
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  created() {},
  // 此时，页面上的元素，已经被渲染完毕了！
  async mounted() {
    // 3. 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'))

    const { data: res } = await this.$http.get('reports/type/1')
    if (res.meta.status !== 200) {
      return this.$message.error('获取折线图数据失败！')
    }

    // 4. 准备数据和配置项
    const result = _.merge(res.data, this.options)

    // 5. 展示数据
    myChart.setOption(result)
  },
  methods: {}
}

 */